As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENG TPE331-10UA-511G, SN P-54019 WAS IN THE TURBINE SHOP FOR ITS SCHEDULED OVERHAUL. WHEN THE INSPECTION WAS CARRIED OUT ON THE HIGH SPEED PINION IT WAS NOTED THAT ONE OF THE GEAR TEETH WAS DAMAGED. THE HELICAL TOOTH ON ONE GEAR HAD A CHIP ON THE TOOTH. THE MATING BULL GEAR HAD NO DAMAGE ON IT AT ALL.